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Valency Of Iron How to calculate the valency of iron?
EXPERT ANSWERS GSENVIRO
(/PEOPLE/GSENVIRO)| CERTIFIED EDUCATOR
The valency of an element is the number of electrons it gains or loses or shares to attain the noble gas configuration. In other words, how any electrons should an element lose or gain or share to have a completely filled outer electronic shell. Iron (Fe) has an atomic number of 26, i.e. has 26 electrons. Its electronic configuration is given as: `1s^2 2s^2 2p^6 3s^2 3p^6 3d^6 4s^2` The energy of 4s and 3d orbital...
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